Washing soda can be added to water to dissolve any lingering hardness.
The presence of dissolved calcium and magnesium ions contributes to the hardness of water. Temporary hardness and permanent hardness are the two different types of water hardness. Boiling the water makes the dissolved calcium carbonate precipitate out as calcium carbonate, which can be used to remove temporary hardness. On the other hand, permanent hardness is brought on by the existence of dissolved calcium and magnesium sulfates and cannot be eliminated by boiling.
Water hardness can be eliminated permanently with washing soda, sometimes referred to as sodium carbonate. By interacting with the dissolved calcium and magnesium ions to create insoluble precipitates, it softens the water.
A,C and D options are not correct. Chlorine is used to disinfect water, but it doesn't remove hardness. Potassium permanganate is a strong oxidizer and can be used as a disinfectant and treatment for certain water impurities, but it also doesn't change the hardness of water. Bleaching powder is used as a disinfectant and oxidizer, but it doesn't have a role in changing the hardness of water.
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Answer: B
Explanation: This should be the correct answer(: since hereditary means passing genetical material/information from parent to offspring (one gerneration to another)
What enzyme can proof-read the dna molecule, minimizing the mistakes made during the process of dna replication?
The DNA polymerase enzymes can proof read the DNA molecules, minimizing the mistakes made during the process of DNA replication.
Proteins called enzymes serve as biological catalysts by quickening chemical reactions. Substrates are the molecules that enzymes can interact with, and the enzyme changes the substrates into other molecules known as products. Enzyme catalysis is required for the majority of metabolic processes in the cell to proceed at speeds quick enough to support life. Enzymes are required for each step in the catalysis of metabolic pathways.
DNA replication, as used in molecular biology, is the biological process that creates two identical copies of DNA from a single original DNA molecule. All living things replicate their DNA, which is the primary mechanism for biological heredity.
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Complete the table to show the benefits and disadvantages of each type of reproduction. pic attached. kinda easy
1.benefit of sexual reproduction
- it provides genetic variety to the population.
2.disadvantages of sexual reproduction
- requires more time and energy
3.benefit of asexual reproduction
- can happen more quickly and with less energy
4.disadvantages of asexual reproduction
- less genetic variation in the population
What factor(s) can affect diffusion speed?
None of the answer choices affect diffusion speed.
size of the diffused materials
shape of the diffused materials
size of the diffused materials and shape of the diffused materials
Answer:
C. Size of the diffused materials and shape of the diffused materials
Societies may have different perspectives on the use of technology.which technological concerns is likely to be most relevant for the people living in this environment?
Answer: B, growing crops during a drought
Explanation:
The main challenge of living in a desert is the lack of food, which prompts a need for some way to irrigate crops during a time of water scarcity. Both food and water are critical for humans to survive, so the main priority is to help ensure an ample supply of those two things. Answer B satisfies this.
Although Options A and C is relevant in our modern time, for the people living in the environment plastic doesn't serve as a really helpful or useful case, especially in a survival context. Additionally, while Option C will help, it is not the most relevant detail in terms of survival. Both electric cars and plastics are luxuries.
For Option D, the taste of water is not very relevant to surviving in a desert environment. Humans need water, even if it does taste bad.
Read the excerpt from How Hurricanes Form.
Hurricanes are the largest and most violent storms on Earth. They are large rotating storms with high speeds that form over warm waters. These storms are known as hurricanes in North America and the Caribbean. However, they have different names in other regions. In South East Asia, they are called typhoons. In the Indian Ocean, they are known as cyclones. Hurricane winds move at the speed of at least 74 miles per hour. They can be as wide as 300 miles. But, how are these huge storms formed?
a world map showing that hurricanes occur north of the equator in the Atlantic Ocean, cyclones occur north and south of the equator in the Indian Ocean, and typhoons occur north of the equator in South East asia
Hurricanes are often compared to engines. Just like engines, they need a type of fuel. Hurricanes form over warm ocean waters near the equator. For hurricanes, their fuel is warm, moist air. When hurricanes form, the warm, moist air above the ocean rises upward from close to the surface of the water. Because the warm air rises, it results in less air under the surface of the water. This area with less air is known as an area with low pressure.
Why do some people say that hurricanes are like engines? (2 points)
a
Both hurricanes and engines are loud when they gain power.
b
Both hurricanes and engines can cause serious destruction.
c
Both hurricanes and engines need a fuel to power them.
d
Both hurricanes and engines are often studied by scientists.
Answer:
C. Both engines and hurricanes need a fuel to power them
Explanation:
Hurricanes are often compared to engines. Just like engines, they need a type of fuel. Hurricanes form over warm ocean waters near the equator
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:)
5. Mutations of the DNA are only passed on to future generations if the change
occurred in a -
A sperm or egg cell.
B cancerous liver cell.
C brain cell.
D mutated skin cell.
Directions: Choose any river in the world. Conduct an internet search and list the following information on your river.
1. Name of river, its source (beginning of river), and outlet (where the river flows to)
2. Location of the source (state, county, country, etc.) and its watershed (flow pattern). Include states or areas the river flows through, including major cities or lakes
3. Direction the river flows, names of tributaries that join the river
4. Names of any structures that affect the river's flow (dams, levees, etc.)
5. What is the condition of the water in the river? List and describe any environmental concerns.
Please help!!
In India, state Uttarakhand At Gomukh, the end of the Gangotri Glacier, in the Himalayan Mountains, the Ganges River begins. The Bhagirathi River's crystal-clear waters are formed when this glacier's ice melts.
What is the river?The Bhagirathi River officially becomes the Ganges River when it joins the Alaknanda River as it runs over the Himalayas.
On the Ganga River, 24 dam or river barrage constructions were finished. Tehri, Haridwar, Rihand, and other well-known dams on the Ganga are only a few examples.
Therefore, one thousand times more copper parts per million are discharged in the Pandu than in unpolluted water before it ever reaches the Ganga.
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The monarch butterfly stores a poisonous
chemical from the milkweed plant in its
body. This chemical makes other animals
who might eat the monarch butterfly sick.
This is an example of
Answer:
commensalism
Explanation:
The inheritance of short wings in Drosophila fruit flies is an X-linked, recessive trait. Which would most likely result it a short-winged female mates with a long-winged male? SC. 912. L. 16. 1
оооо
All offspring will be short-winged
All females will be long-winged, and all males will be short-winged
All females will be short-winged, and all males will be long-winged
o Half of the males and females will be short-winged, and half will be long-winged
The result of a short-winged female mate with a long-winged male is all females will be long-winged, and all males will be short-winged.
Thus, the correct answer is B.
What is X-linked recessive inheritance?X-linked recessive inheritаnce is а wаy а genetic trаit or condition cаn be pаssed down from pаrent to child through mutаtions (chаnges) in а gene on the X chromosome. In mаles (who only hаve one X chromosome), а mutаtion in the copy of the gene on the single X chromosome cаuses the condition. Femаles (who hаve two X chromosomes) must hаve а mutаtion on both X chromosomes in order to be аffected with the condition.
If only the male or the female hаs the mutаted X-linked gene, the children аre usuаlly not аffected аnd аre cаlled cаrriers becаuse one of their X chromosomes hаs the mutаtion but the other one is normаl. Sons will be аffected if they inherit the mutаted X-linked gene from their females. Males cаnnot pаss X-linked recessive conditions to their sons.
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Help
Which of the following is NOT an advantage of asexual reproduction?
greater genetic variation
requires little energy
less opportunity for mutation
rapid reproduction
What are two characteristics of Precambrian rocks?
Answer:
1. Precambrian rocks are very old.
2. They have very few fossils.
Characteristics of precambrian rocks:-
Fossils are rare in Precambrian rocks, probably because Precambrian life-forms lacked bones, shells, or other hard parts that commonly form fossils.These rock layers contain a permanent record of the Earth's past, including the fossilized remains of plants and animals buried when the sediments were formed.What is precambrian?The Precambrian is the earliest of the geologic ages, which are marked by different layers of sedimentary rock.
What is a fossil?Fossil are the remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in Earth's crust.
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If R is dominant to r, the offspring of the cross of RR with rr will: a. have the same phenotype as the RR parent. b. have the same phenotype as the rr parent. c. have the same genotype as the RR parent. d. be homozygous.
As a result, the progeny will still have the homozygous gene rr. As a result, the offspring will share both parents' genetics and phenotypic.
What does genotype imply in its entirety?The term "genotype" broadly refers to an organism's genetic make-up; in other words, this characterizes an organism's whole gene pool. The phrase can also be used to refer to a gene's alleles, or variant forms, in a more specific meaning.
Is the genotype AA typical?Typically, there are five (5) distinct blood genotype kinds. AA, AS, Ad, SS, & SC are their names. While the first pairs (AA and or AS) are typical, AC is uncommon, and the last two (SS, SC) are atypical and irregular, frequently resulting in sickle cell disease.
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A glomerulus is Question 13 options: a) the expanded end of a nephron b) the source of erythropoietin c) attached to the collecting duct d) a knot of capillaries within the renal corpuscle e) the loop-shaped segment of the nephron
The correct option is D, A knot of capillaries within the renal corpuscle. Each nephron has a network of tiny blood vessels known as glomeruli that are encased in a sac known as Bowman's capsule.
The filtered waste product (urine) passes via microscopic tubes before being transported from the kidneys to the bladder by larger tubes known as ureters.
The glomerulus is the kidney's filtering unit, and it is made up of a network of capillaries and highly differentiated epithelial cells called podocytes, which govern the selective filtration of blood into an ultrafiltrate that will eventually become urine (Greka and Mundel, 2012).
Glomerulus is a tuft of blood capillaries nestled inside the glomerular capsule, which is situated at the end of each nephron. The glomerulus receives blood that is about to be filtered.
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In genetic engineering, the transfer of hereditary information from one species to another results in the formation of
In genetic engineering, the transfer of hereditary information from one species to another result in the formation of transgenic organisms.
In genetic engineering, the transfer of hereditary information from one species to another result in the formation of transgenic organisms. This process is also known as genetic modification or recombinant DNA technology.
Genetic engineers use a variety of techniques to transfer specific genes from one organism to another, such as bacteria, yeast, plants, or animals. The goal of this process is to introduce new or improved characteristics into the organism, such as resistance to disease or improved nutritional value.
For example, a gene for resistance to a particular pesticide might be introduced into a crop plant to protect it from damage, or a gene that codes for a human protein might be introduced into bacteria to produce large amounts of that protein for medical use. Transgenic organisms are widely used in agriculture, biotechnology, and medicine.
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What type of bond occurs between the nitrogenous bases?
Answer:
hydrogen bond
Explanation:
very strong interaction
As unwinding of the helix occurs during DNA replication, tension referred to as ________ is created ahead of the replication fork. This tension is relieved by the action of ________.
As unwinding of the helix occurs during DNA replication, tension referred to as supercoiling; is created ahead of the replication fork. This tension is relieved by the action of DNA gyrase.
DNA replication, as used in molecular biology, is the biological process that creates two identical copies of DNA from a single original DNA molecule. All living things replicate their DNA, which is the primary mechanism for biological heredity.
This is necessary for cell division during tissue development and repair, and it also guarantees that each new cell gets a copy of the DNA. DNA replication is necessary because the cell's ability to divide makes it different from other organisms.
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what are some negative side effects of artificial selection on corn, watermelon and peaches?
Answer:
It may lead to a lack of variety in the species.
Genetic mutations are still going to occur.
There is no guarantee that the desired traits will pass to them.
It can create genetic bottlenecks.
There may be evolutionary changes that harm both plants and the planet.
Artificial selection can even affect plants or animals outside of the intended effort.
Explanation:
hope this helps!
When an individual starts exercising at a light pace, what energy system provides the bulk of energetic needs if this were to last an hour
The fatty acids provide the bulk of energetic needs for light exercise if it were to last for an hour.
Fatty acids are chemically the carboxylic acids having a long aliphatic chain that may be saturated or unsaturated. These are responsible for the deposition of fats in the body. Fatty acids are responsible for the formation of lipids in the body. The various food forms that provide fatty acid to the body are: seafood, nuts. seeds, plant oils, etc.
Exercise is the form of body movements performed in order to keep the body healthy and active. There are various forms of exercise from the mild walking to high intensity workouts.
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Which process is responsible for causing this column of rock to form?
A. crystallization
B. deposition
C. sedimentation
D. weathering
Answer: The answer is crystallization
Explanation:
Which process causes hillsides and mountains to gradually get smaller?
The answer is Physical Erosion
What is a long term change that happens after a flood?
A. Standing water in the streets and sewers
B. Temporary displacement of organisms
C. Permanent change in the landscape
D. Poor water quality in rivers and streams
Which of the following is not true of biotechnology? ((NO LINKS PLEASE))
A.) Biotechnology raises ethical concerns.
B.) Biotechnology is a new branch of science.
C.) Biotechnology raises just as many concerns as it does benefits.
D.) Biotechnology is a huge part of life.
Which development plan would cause the least harm to the existing forest ecosystem?
A. Spread the houses out evenly so that there is as much forest as possible between each of the houses
B. Place the houses close together and use the remaining forest as a natural common area
C. Build some big houses on large lots and some small houses on small lots so that families with different incomes can live together
D. Build several small clusters of homes in different places so that each house will have a few close neighbors
Answer:
B. Place the houses close together and use the remaining forest as a natural common area.
Explanation:
Placing the houses close together and use the remaining forest as a natural area is the development plan that would cause little harm to the existing forest ecosystem because less area of forest will be disturbed and the remaining forest is protected from the harm. This type of development is good for both people and organisms present in the ecosystem due to little damaged of their habitat and these organisms can't be extinct from that area.
5 Compare The images below show two processes by which clouds form when an air mass is lifted. In what ways are these two processes similar? In what ways are these two processes different?
The two processes Frontal Lifting and Orographic lifting are similar but different processes that occur int he Earth's Hydrologic Cycle.
When air is raised over an obstruction such as a mountain, this is known as orographic lifting. As the air mass is elevated, it cools and moisture inside the air mass condenses, perhaps becoming precipitation. Frontal lifting happens when warm and cold air masses collide.
What is Hydrologic Cycle?The water cycle is a biogeochemical cycle that depicts the continuous movement of water on, above, and below the Earth's surface. It is also known as the hydrologic cycle or the hydrological cycle.
The hydrologic cycle is critical because it is the means by which water reaches plants, animals, and us! Aside from providing water for people, animals, and plants, it also transports nutrients, diseases, and sediment into and out of aquatic habitats.
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Base your answer on the information below and on your knowledge of biology.
A student measured oxygen and carbon dioxide concentration levels in an aquatic ecosystem during a 24 hour period. Identify two biological processes that are responsible for the production of varying amounts of carbon dioxide and oxygen within the aquatic ecosystem.
Two biological processes responsible for producing varying amounts of carbon dioxide and oxygen within aquatic ecosystems are 1) respiration by aquatic plants and animals and 2) photosynthesis by aquatic plants.
What is an aquatic ecosystem?
An aquatic ecosystem is any freshwater or saltwater environment and the characteristic flora, fauna (plants) and animals (animals) that inhabit that habitat. Freshwater ecosystems include rivers, lakes, and ponds. Saltwater ecosystems include seas and oceans. Aquatic ecosystems have historically been important to humans and other organisms. Aquatic ecosystems not only provide a food source for a wide variety of organisms, but are also essential for cycling important gases and nutrients such as carbon dioxide, nitrogen and phosphorus.
Aquatic ecosystems are known to have high levels of biodiversity.
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Which of the following has no effect on the outcome of the host-parasite relationship?
A. The number of parasites on or in the host
B. The virulence of the parasite
C. The defenses of the host
D. All of these have an effect on the outcome of the host-parasite relationship.
Answer:
C. The defenses of the host
which of the following is true about renewable resources?
a. they can never run out as they come back quickly
b. they are never natural resources
c. they can be limiting resources if their use is quicker than their renewal.
D. they are typically abuotic and run out quickly
Answer:
the answer is A. they can never run out as they come back quickly
Explanation:
renewable it renews itself it comes back. solar power, wind, thermal, and water are all examples of renewable energy
How is the ocean explored?
Answer:
Hey mate......
Explanation:
This is ur answer.....
Technologies used to explore outer space and the ocean include submersibles, remotely operated vehicles (ROVs), satellites, rovers, diving/scuba gear, buoys, mega corers, water column samplers, and sonar for mapping.
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Answer: Technology such as submarines and deep diving machines are created to help search depths. Biologists and and such deep dive and put together their findings. High powered lights are required to help see at such depths, since sunlight is unable to reach the ocean floor.
Explanation: Hope this helps (^_^)
Which of the following is not an agent of weathering?"
Glacier
Wind
Precipitation
Soil
Answer:
soil is not an agent of weathering